
/**
 * COOKIE存储
 * @param {String} key 键
 * @param {Object} val 值
 * @param {Number} time 时间，默认10s
 */
function setcookie(key, val, time = 10) {
    if (typeof val == 'object') val = JSON.stringify(val)
    const d = new Date   
    d.setTime( d.getTime() - 1000*60*60*8 + 1000*time )
    document.cookie = `${key}=${val}; expires=${d}`    
}

 /**
  * COOKIE获取
  * @param {String} key 键
  * @returns String
  */
function getcookie(key){
    let arr = document.cookie.split('; ')
    for (let i=0; i<arr.length; i++) {
        let item = arr[i]
        let tempArr = item.split('=')
        if (tempArr[0] == key) return tempArr[1]
    }
}
 
 /**
  * COOKIE删除
  * @param {String} key 键
  * @returns undefined
  */
function removecookie(key){
    setcookie(key, null, -1) 
}